Bump peter-murray/workflow-application-token-action from 2 to 4

Bumps [peter-murray/workflow-application-token-action](https://github.com/peter-murray/workflow-application-token-action) from 2 to 4.
- [Release notes](https://github.com/peter-murray/workflow-application-token-action/releases)
- [Commits](peter-murray/workflow-application-token-action@v2...v4)

---
updated-dependencies:
- dependency-name: peter-murray/workflow-application-token-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/run-tests.yml

@@ -31,7 +31,7 @@ jobs:
     steps:
       - name: Get Token
         id: get_workflow_token
-        uses: peter-murray/workflow-application-token-action@v2
+        uses: peter-murray/workflow-application-token-action@v4
         with:
           application_id: ${{ vars.FUELVIEWS_BOT_APP_ID}}
           application_private_key: ${{ secrets.FUELVIEWS_BOT_APP_PRIVATE_KEY }}